Switch mounting



O. J. MOEHLER swI'rqH MOUNTING Feb; 12,1929.

Filed June 21, 1927 INVENTOR as ATTORNEY Patented Feb. 12,1929.

' UNITED STA E PATENT OFFICE. I

o'rro a. MOEHLER,F-1\TEWARK, NEW JERSEY, ASSIGNOR T0 COOPER nnwirr ELEC-:rEIocoMrANY', OF I-IOBOKEN, NEW JERSEY, AIGORPORATION or EW JERSEY.

r; swiron MOUNTING. I

' Application filed June 21, 1927. Serial 200,335.

The present invention relates to electric switches of the mercury flowtype and par ticularly to mounting means for such switches and tounits-comprising. switches and mounting means therefor.

Various objects and advantages'oit' the invention will be obvious fromthe following particulardescription of one form of mounting and switchunit embodying the invent on or from aninspectionofthe accompanyingdrawing; and the invention also consists in certain new and usefulfeatures ofconstruction and combinationsof parts hereinafter set forthand claimed.

In the accompanying drawingthere is shown for purposes of illustrationone ,form of switch and mounting embodying the invention, in which g IFig. 1 is a frontelevation view of a switch mounting embodying. theinvention and a switch carried thereby, H

Figs.v 2 and 3 are respectivelyanend view and a plan view of themounting member of sl,

Fig. 4: is a sectional line4-4ofFig 5, p g p Fig. 5 is a sectional viewtaken along the line.55 of Fig. 3,'

Fig. 6 is a bottom plan viewof the mount ing ofFig. 1 and g 1 I Figs. 7and 8 are respectivelyface and side view taken along the views inelevation of a strap member used for mounting the switch tothemountingmem- 'v in is a side elevation View ofa strap member similarto that of Figs. 7 and 8 but having a spring clip for. attachingconductor leads. a

In the drawing the rigid'mounting block 1 is preferablyof insulatingmaterial suchas bakelite, hard rubber, or other insulating, material andis of elongated. shape tosuit the length of the Inercurytube switch3which latter .has mounted on one of each end thereof a metal cap 1-4which connects with a respective one ofthe electrodes 6,}6 of theSwitch. Said member 1 on its'bottom' side is provided at each end with apair of projections 8, 8 having inclined; inner: surfaces adapted toreceive arespective cap 4 andto support it against lateral movement..This the mounting member 1. Bolts 12, 12and the nuts 1 1. 14 secure thestraps '10,' 10 to said member 1, but the straps themselves and themember 1 arejinthe preferred embodiment of the invention formed to holdthe switch 3" and straps 10, 10 in place on the memberl without the aidof said bolts and nuts 12 and 14. These bolts and nuts 12 and 14 areused to positively secure the straps 10 10 to the member 1 and also tosecure electrical leads to said straps 10, 10 for connectiontherethrough with said terminals 6, 6 of the switch.

' Each of said straps 10, 10 comprises a main longitudinal portionhaving an opening 16 therethrough near one end on each side of which isformed on the strap 10a. wing or vane 18 for guiding and holding 'inplace the end of anelectric conductor fastened under the head otarespective bolt '12 or washer 2O thereat. At its upper end there extendsa portion 2211mm the main partof strap 10 at right angles therewith andin a directionaway from said vanes 18, 18, andsaid member 1 at each endon its upper surface has formed therein a downward recess 24 into whicha respective member 522 fits sothat it is even and flush with the uppersurface of member 1. At t a short distance from each end; of member 1there extends downwardly from said depression 24 a deeper depression 26adapted'to receive nut 14. This depression 26 is of such width that itssides will serve to prevent rotation of the nut therein when the screwis being turnedtherein. In the form shown the width of the member 22isthe same depression 30 to receive the end of the bolt 12. To reducethe weight of said member 1 it is formed with a cavity 32 thereinextending' upwardly of its lower surface, this cavity 32 servestoreceive the seal 01f tip 34: of the glassenvelope of switch 1 which inthe assembled position extends upwardly, it also serves to receive theelectrode cup.v 38 in certain cases as; shown where the switch ismountedabove the backing member 1. In

such case thecup 38 is made of a size and at a position to fit into thedepression. Mounting holes 36, 36 extending transversely are p providedin member 1 with bosses 38, 38 formed thereat between the sidesot saiddepression 32.

In assembling the switch sleeve to mount-- ing block. 1 the strap 10ismountedat each end of member 1 and the bolt 12 thereoftightened tohold them firmly in place. A switch envelope 3 having the ends of thecaps 4 thereof tin and provided with a body ot solder is mounted withsaid caps 4- resting between respective parts of said pro-' 3ect1ons 8',8' and with the seal 014E314: or cup;

38 extending int'o the said depression 32. The

straps 10 are then pressed against respective caps 4e and heated to meltthe solder on the cap and to solder. the strap to the cap. i ht strap ispreferably made of brass niclreb plated: or tinnedl. In this arrangementas willbe apparent trom the drawing and the above description when thestraps are in position on the block 1 and are soldered to the caps4,.4ot' the switch 8 the member 22 ofthestrap. will hold thenut 14 inplace even when the bolt 10-is not screwed thercinto, and the strapthrough the extension 22 and said depression 24 to hold theswitch inposition on block-'1', fitting. the caps 4, i between the bodiment' inwhich the strap 10 has a clipt40' of tlie Fahnestock'type for securingelectric leads thereto. This clip i0 takes the place of the bolt and nut12, 14 of theothenembodiment and them'ounting and securing oi" theswitch 3 to backing 1 is fully attained through themesting of the switchbetween said projectionsfi, 8, the fittingof'said members 22, 22 intosaid depressions 24, 24' and the bearin of said straps-10, 10 againstthe ends of backing 1'.

lVhil'e I haveshown anddescribed'and have pointed outin the annexedclaims certain novel features of the invention, it will be understoodthat various omissions, substitiu tions and changes in the forms anddetails of the device illustrated and in itsu'se may be made'by thoseskilled in the art without departing from the spiritof the inventionI'claim: v 1. In a switch unit, in combination, a mercury tube switch, arigid backing member therefor, and mounting members securectt'e saidswitch and engagingsaidbacking memher, said backing memberbeingrecessedito backing. member toreceive saidswitch,.the sidesrof therecess being adapted to prevent lateral movement of the switch withrespect to the backing memher, saidmounting, members having lateral proectionsandisa1d backing member having recesses to receive said lateralprojections, said: lateral-projections and recesses serving to preventlateral movement of said mounting membersxwit-h-"respect to said backingmem ber.

2. In a switch unit, incombination, a mercury tube switch, a rigidbacking member therefor, and mounting members secured to said switch andengaging said backing memher, said backingmember being recessed toreceive said switch, the sides of the recess be ing adapted to preventlateral movement of" the switch with respect to-thebacking member, saidmounting members having lateral. projections and said backing memberhaving recesses toreceive s id latera-lprojections, said lateralprojections and recesses servingto prevent lateral movement of-SttlQlfiTlOLlIllJ- ing members with respect to saidbacking member "andsaid mounting members bearing against said backing member to preventlongitudinal movement of said switch with re spect to said rockingmember.

' 3. In a switch unit, in combination, azmercury tube switch, a rigidbacking member therefor, and mounting members secured to said switchand-engaging saidbacking'memher, said backing member being recessed toreceive said switch, the sides of the recess being adapted to preventlateral movement of the switch with respect tothe'backing'member,saidmounting members having lateral projections and said backingmember'having recesses to receive said lateral projections, said lateralprojections and recesses serving to preventlateralmovement of saidmounting members with respect to said backing member, said mountingmembers-being of conductive material and connected with the electrodesofsaid switch", and means on said mounting members for making electricalcon+ nect-ion therethrough'to the electrodes-ofthe switch. v

4. In a switch unit, in combination, a mercury tube switch, a rigidbacking member therefor, and mounting members secured to saidswitch andengaging said backing memher, said backing member being recessed toreceive said switch, the sidesoffthe recessbeing adapted toprevehtlateral: movement? of the switch with respectto the. backing memher,said mounting members having lateral projections and said?v hacking:member having recesses to receivesaidf latera'l ipnoj ecti ons, saidlateral proj ectionsandrecesses' serving'togprevent lateralmovementotsaid mounting members-with respect to said backingm'ember andsaidm'ounting members bearing against said event l longitudinal movementof said switch with: respecttto said llO backing member, said mountingmembers being of conductive material and connected with the electrodesof said switch, and means on said mounting members for making electricalconnection therethrough to the electrodes of the switch. 7

5. A mercury tube switch having electrodes 7 sealed thereinto, a rigidbacking member of insulating material co-extensive with said switch andrecessed at one face to receive the switch, said backing member having arecess extending inwardly from each end thereof, rigid mounting membersmounted to said electrodes one at each end of the switch and extendingover the ends of said backing member and into said inwardly extendingrecesses, the seating of the switch in the first said recessed faceserves to prevent lateral movement of the switch with respect to thebacking member, said inwardly extending members serving to preventlateral movement of said mounting members with respect to said backingmember, and said mounting members serving to prevent longitudinalmovement of the switch with respect to the backing member.

6. A mercury tube switch having electrodes sealed thereinto, a rigidbacking member of insulating material co-extensive with said switch andrecessed at one face to receive the switch, said backing member having arecess extending inwardly from each end thereof at ber and into saidinwardly extending recess, I

the seating of the switch in the first said rccessed base serving toprevent lateral movement of the switchwith respect to the backingmember, said inwardly extendingmembers serving to preventlateralmovement of said mounting members with respect to said backing member,and said mounting'menr bers serving to prevent longitudinal move ment ofthe switch with respect to the backing member.

Signed at ,Hoboken, in the county of Hud son and State of New Jersey,this 15th day of April, A. D. 1927. I a

OTTO J. MOEHLER.

